EP0604956A3 - Entscheidungsrückgekoppelter Entzerrer mit als vorwärtsgekoppeltes Filter funktionierendem adaptivem Filter. - Google Patents

Entscheidungsrückgekoppelter Entzerrer mit als vorwärtsgekoppeltes Filter funktionierendem adaptivem Filter. Download PDF

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Publication number
EP0604956A3
EP0604956A3 EP93120969A EP93120969A EP0604956A3 EP 0604956 A3 EP0604956 A3 EP 0604956A3 EP 93120969 A EP93120969 A EP 93120969A EP 93120969 A EP93120969 A EP 93120969A EP 0604956 A3 EP0604956 A3 EP 0604956A3
Authority
EP
European Patent Office
Prior art keywords
equalizer
decision feedback
array operating
feedforward
adaptive filter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP93120969A
Other languages
English (en)
French (fr)
Other versions
EP0604956B1 (de
EP0604956A2 (de
Inventor
Ichiro Tsujimoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Publication of EP0604956A2 publication Critical patent/EP0604956A2/de
Publication of EP0604956A3 publication Critical patent/EP0604956A3/de
Application granted granted Critical
Publication of EP0604956B1 publication Critical patent/EP0604956B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H04B7/0848—Joint weighting
    • H04B7/0854—Joint weighting using error minimizing algorithms, e.g. minimum mean squared error [MMSE], "cross-correlation" or matrix inversion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/2605—Array of radiating elements provided with a feedback control over the element weights, e.g. adaptive arrays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/12—Neutralising, balancing, or compensation arrangements
    • H04B1/123—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means
    • H04B1/126—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means having multiple inputs, e.g. auxiliary antenna for receiving interfering signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Radio Transmission System (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Noise Elimination (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Filters That Use Time-Delay Elements (AREA)
EP93120969A 1992-12-28 1993-12-27 Entscheidungsrückgekoppelter Entzerrer mit als vorwärtsgekoppeltes Filter funktionierendem adaptivem Filter Expired - Lifetime EP0604956B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP348995/92 1992-12-28
JP4348995A JP2663820B2 (ja) 1992-12-28 1992-12-28 判定帰還形等化器

Publications (3)

Publication Number Publication Date
EP0604956A2 EP0604956A2 (de) 1994-07-06
EP0604956A3 true EP0604956A3 (de) 1996-08-07
EP0604956B1 EP0604956B1 (de) 2006-10-04

Family

ID=18400786

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93120969A Expired - Lifetime EP0604956B1 (de) 1992-12-28 1993-12-27 Entscheidungsrückgekoppelter Entzerrer mit als vorwärtsgekoppeltes Filter funktionierendem adaptivem Filter

Country Status (4)

Country Link
US (1) US5689528A (de)
EP (1) EP0604956B1 (de)
JP (1) JP2663820B2 (de)
DE (1) DE69334067T2 (de)

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JP3325735B2 (ja) * 1995-01-31 2002-09-17 松下電器産業株式会社 データ受信装置
DE19509601A1 (de) * 1995-03-16 1996-09-26 Siemens Ag Verfahren und Anordnung zum Entzerren von empfangenen Datensignalen
GB2309591B (en) * 1996-01-27 1999-08-04 Motorola Ltd Apparatus and method for adaptive beamforming
AU2756797A (en) * 1996-05-20 1997-12-09 Post Und Telekom Austria Aktiengesellschaft Process and device for reception with directional resolution
US7190720B2 (en) * 2001-07-03 2007-03-13 Zenith Electronics Corporation Tap weight initializer for an adaptive equalizer
JP3300252B2 (ja) * 1997-04-02 2002-07-08 松下電器産業株式会社 適応送信ダイバーシチ装置及び適応送信ダイバーシチ方法
WO1998042089A2 (en) * 1997-03-14 1998-09-24 At & T Corp. Spatial-temporal equalization for is-136 tdma systems with rapid dispersive fading and co-channel interference
US6243412B1 (en) 1997-06-03 2001-06-05 Ntt Mobile Communications Network Inc. Adaptive array transmitter receiver
KR19990010110A (ko) * 1997-07-15 1999-02-05 윤종용 이동 통신시스템의 다중접속간섭 제거장치 및 방법
IT1296896B1 (it) 1997-12-19 1999-08-02 Italtel Spa Procedimento di discriminazione di un segnale utile da una pluralita' di interferenti isofrequenziali ricevuti da antenne a schiera di
US6363105B1 (en) * 1998-02-17 2002-03-26 Ericsson Inc. Flexible sliding correlator for direct sequence spread spectrum systems
US6246722B1 (en) 1998-04-29 2001-06-12 Nortel Networks Limited Method of detection of misconvergence using constellation scanning in an equalizer
US6215818B1 (en) 1998-04-29 2001-04-10 Nortel Networks Limited Method and apparatus for operating an adaptive decision feedback equalizer
US6320904B1 (en) 1998-04-29 2001-11-20 Northern Telecom Limited Clustering blind convergence process in an adaptive decision feedback equalizer
US6163572A (en) * 1998-04-29 2000-12-19 Nortel Networks Limited Method of reducing coefficient leakage noise introduced to an equalizer during steady state operation
US6188722B1 (en) 1998-04-29 2001-02-13 Nortel Networks Limited Sequential blind convergence process in an adaptive decision feedback equalizer
US6680971B1 (en) * 1998-05-18 2004-01-20 Sarnoff Corporation Passband equalizer for a vestigial sideband signal receiver
EP0967763B1 (de) * 1998-06-29 2004-12-01 Alcatel Mehrträgerempfänger mit RLS-Frequenzbereichsentzerrer pro Träger
US7076228B1 (en) * 1999-11-10 2006-07-11 Rilling Kenneth F Interference reduction for multiple signals
JP3554226B2 (ja) * 1999-06-18 2004-08-18 松下電器産業株式会社 受信装置
US6563812B1 (en) * 1999-10-12 2003-05-13 Mitsubishi Electric Research Laboratories, Inc. Method and apparatus for detecting multiple signals in a CDMA network
US6862316B2 (en) 2000-03-27 2005-03-01 Ntt Docomo, Inc. Spatial and temporal equalizer and equalization method
US7010029B1 (en) * 2000-04-13 2006-03-07 At&T Corp. Equalization of transmit diversity space-time coded signals
US6317467B1 (en) * 2000-06-14 2001-11-13 Lloyd C. Cox Beamforming and interference cancellation system using general purpose filter architecture
US6647077B1 (en) 2000-07-31 2003-11-11 Rf Micro Devices, Inc. Multipath parameter estimation in spread-spectrum communications systems
US6728324B1 (en) * 2000-07-31 2004-04-27 Rf Micro Devices, Inc. Method and apparatus for multipath signal compensation in spread-spectrum communications systems
US6700929B1 (en) 2000-07-31 2004-03-02 Rf Micro Devices, Inc. Method and apparatus for multipath parameter estimation in spread-spectrum communications systems
US7003028B1 (en) * 2000-08-29 2006-02-21 Maxtor Corporation Mixed signal adaptive boost equalization apparatus and method
US7042937B2 (en) * 2001-04-23 2006-05-09 Koninklijke Philips Electronics N.V. Hybrid frequency-time domain equalizer
US7110447B2 (en) * 2002-05-09 2006-09-19 Zenith Electronics Corporation Channel estimator for an adaptive equalizer
US7054396B2 (en) * 2002-08-20 2006-05-30 Rf Micro Devices, Inc. Method and apparatus for multipath signal compensation in spread-spectrum communications systems
JP4309110B2 (ja) * 2002-09-27 2009-08-05 パナソニック株式会社 適応アンテナ無線通信装置
US7813440B2 (en) * 2003-01-31 2010-10-12 Ntt Docomo, Inc. Multiple-output multiple-input (MIMO) communication system, MIMO receiver and MIMO receiving method
US7257377B2 (en) 2003-02-18 2007-08-14 Qualcomm, Incorporated Systems and methods for improving channel estimation
US20040203812A1 (en) * 2003-02-18 2004-10-14 Malladi Durga Prasad Communication receiver with an adaptive equalizer that uses channel estimation
US7272176B2 (en) 2003-02-18 2007-09-18 Qualcomm Incorporated Communication receiver with an adaptive equalizer
US20040161057A1 (en) * 2003-02-18 2004-08-19 Malladi Durga Prasad Communication receiver with a rake-based adaptive equalizer
US7356074B2 (en) * 2003-05-08 2008-04-08 Rf Micro Devices, Inc. Estimation of multipath channel with sub-chip resolution
JP4331641B2 (ja) 2004-04-09 2009-09-16 富士通株式会社 等化回路を有する受信回路
US7533140B2 (en) * 2004-04-13 2009-05-12 Jaber Associates, L.L.C. Method and apparatus for enhancing processing speed for performing a least mean square operation by parallel processing
KR100606790B1 (ko) * 2004-08-12 2006-08-01 엘지전자 주식회사 다중 안테나를 이용한 채널 등화기
JP4693462B2 (ja) * 2005-03-31 2011-06-01 富士通テン株式会社 ダイバシティ受信装置および方法
JP4939888B2 (ja) 2005-10-05 2012-05-30 パナソニック株式会社 無線通信装置
JP4623327B2 (ja) 2008-07-14 2011-02-02 日本電気株式会社 移動通信システム、基地局、干渉除去方法
JP2010068305A (ja) 2008-09-11 2010-03-25 Nec Corp 移動通信システム、基地局、干渉除去方法
US8953669B2 (en) 2011-01-26 2015-02-10 Renesas Electronics Corporation Decision feedback equalizer
WO2019171551A1 (ja) * 2018-03-08 2019-09-12 三菱電機株式会社 受信装置および受信信号処理方法
JP7008248B2 (ja) 2018-03-29 2022-01-25 パナソニックＩｐマネジメント株式会社 受信装置、受信方法、及び受信システム
US11231740B2 (en) * 2019-02-06 2022-01-25 Credo Technology Group Limited Clock recovery using between-interval timing error estimation
US11171815B2 (en) * 2020-01-21 2021-11-09 Credo Technology Group Limited Digital equalizer with overlappable filter taps
CN113630355B (zh) * 2021-10-12 2022-02-08 中国人民解放军海军工程大学 基于空时功率倒置阵的宽带干扰抑制装置及抑制方法

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US3879664A (en) * 1973-05-07 1975-04-22 Signatron High speed digital communication receiver
JPH0335622A (ja) * 1989-06-30 1991-02-15 Matsushita Electric Ind Co Ltd 受信装置

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JP2833609B2 (ja) * 1991-09-12 1998-12-09 日本電気株式会社 判定帰還形自動等化器
JP3033308B2 (ja) * 1991-12-25 2000-04-17 松下電器産業株式会社 合成ダイバーシチ受信機
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US3633107A (en) * 1970-06-04 1972-01-04 Bell Telephone Labor Inc Adaptive signal processor for diversity radio receivers
US3879664A (en) * 1973-05-07 1975-04-22 Signatron High speed digital communication receiver
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Non-Patent Citations (4)

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Title
BALABAN P ET AL: "OPTIMUM DIVERSITY COMBINING AND EQUALIZATION IN DIGITAL DATA TRANSMISSION WITH APPLICATIONS TO CELLULAR MOBILE RADIO -PART I: THEORETICAL CONSIDERATIONS", IEEE TRANSACTIONS ON COMMUNICATIONS, vol. 40, no. 5, 1 May 1992 (1992-05-01), pages 885 - 894, XP000292223 *
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PATENT ABSTRACTS OF JAPAN vol. 015, no. 165 (E - 1061) 25 April 1991 (1991-04-25) *

Also Published As

Publication number Publication date
EP0604956B1 (de) 2006-10-04
DE69334067T2 (de) 2007-05-03
DE69334067D1 (de) 2006-11-16
EP0604956A2 (de) 1994-07-06
JP2663820B2 (ja) 1997-10-15
US5689528A (en) 1997-11-18
JPH06204902A (ja) 1994-07-22

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